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When fitting the lamp:
- Always isolate the equipment from the supply when inserting a lamp;
- Ensure the circuit is suitably fused;
- Ensure the lamp is of the correct power rating and type;
- Check lampholder is in good condition. If the contacts show any sign of corrosion, replace the
lampholder;
- Check the lampholder is in a good dry condition. Never allow water to collect in the lamp fitting
or come into contact with the lamp.
To fit the lamp:
- Loosen all the thumbscrews on the front of the searchlight, remove the bezel and glass and
store in a safe place;
- For easier access the light shield/spill ring may be removed by undoing the fasteners;
- Cut open one end of the protective sleeve surrounding the lamp;
- Using the sleeve to prevent the fingers coming into contact with the lamp, position the two pins
above the holes in the lampholder;
- Gently push the lamp into the lampholder and remove the protective sleeve;
- Replace the light shield/spill ring and front bezel assembly, ensuring the thumbscrews are
securely fastened.
Testing
Upon correct installation and connection to an electrical supply, the equipment can be tested in
order to ensure its’ correct performance. A competent person with some knowledge of electrical
equipment must carry out this work.
Equipment required: Multi-meter with leads
Ammeter
Using the equation P=VI, the approximate power output of the equipment can be calculated in the
following way:
- Using the multi-meter, take a voltage reading;
- Using the ammeter, take an amps reading from the live cable to the lamp;
- Multiply these figures together to give an approximate wattage (Power output).
For example:
Using a 240v 1000w Tungsten halogen lamp:
Voltage reading = 240v; Amps reading = 4 amps
Therefore, Wattage = 240 x 4 = 960 watts
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